Manufacturing a titanium alloy part, which is useful in aeronautical industry, comprises performing N-successive treatment cycles of hot forging treatment at a specified temperature until the part obtains a uniform temperature

The process comprises performing N-successive treatment cycles of hot forging treatment at a specified temperature (T n) until the part obtains a uniform temperature. The piece is maintained at room temperature before carrying out the forging treatment. The total number of treatment cycles is 2, in which (T n+1-T n)>= 20[deg] C and T nand T n+1are lower than beta -transition temperature of the alloy. Different (N) furnaces are used to carry out the heating process for forging. After the last treatment cycle, the piece undergoes a treatment using a solution at a temperature T(R). The process comprises performing N-successive treatment cycles of hot forging treatment at a specified temperature (T n) until the part obtains a uniform temperature. The piece is maintained at room temperature before carrying out the forging treatment. The total number of treatment cycles is 2, in which (T n+1-T n)>= 20[deg] C and T nand T n+1are lower than beta -transition temperature of the alloy. Different (N) furnaces are used to carry out the heating process for forging. After the last treatment cycle, the piece undergoes a treatment using a solution at a temperature T(R) lower than the beta -transition temperature of the alloy and greater than the first treatment cycle temperature (T 1), where the difference between the temperature [delta T(R)=(T(R)-T 1)] of the solution and the first temperature cycle is 40[deg] C. The part is maintained at the temperature of solution for 1 hour, and then annealed at a temperature T(C) of 700[deg] C. L'invention concerne le domaine des procédés de fabrication d'une pièce en alliage de titane. Elle concerne plus particulièrement un procédé comprenant N cycles successifs de traitement de forgeage à chaud, appelés chaudes, de cette pièce avec, pour chaque nème cycle de chaude, n variant de 1 à N, un chauffage de cette pièce à une nème température de chaude Tn jusqu'à ce que la température de cette pièce soit sensiblement homogène, une opération de forgeage de la pièce à la température de chaude Tn, suivi immédiatement par une trempe de la pièce jusqu'à la température ambiante, le nombre total de cycles de chaude N étant au moins égal à 2, et (Tn+1 - Tn) ≥ 20°C avec Tn et Tn+1 inférieures à la température -transus de l'alliage pour tout n entier compris entre 1 et (N-1).